Memory module can be composed using different type of memory chips and therefore created different type of density for the module. For instance, a 1GB PC2-6400 800Mhz DDR2 SODIMM memory can be composed using eight 128x8(High Density 1Gb technology) memory chips or sixteen 64x8(Low Density 512Mb technology) memory chips. As the laptops are equipped with different memory chipsets, some older laptop (chipset) would have compatibility issue working with the modules that is built with the newer 1Gb technology. Using the Not-Compatible memory will result the laptop to either not boot or only recognizing half of the memory modules. Thus that is not the correct memory for your system. Our Memory Finder and Memory Scanner will help to eliminate those problems and find the correct memory for you. We guaranteed the memory to work or your money back.
It is recommended to buy one module with bigger capacity than two modules with smaller capacity so you can leave the empty slot for future upgrade. For instance, if you can buy either one 2GB memory module or two 1GB memory modules for your system, it is recommended to get one 2GB and leave the other memory slot empty for future upgrade if necessary. It is recommended to buy the faster memory when there are more than one speed available for faster speed. For instance you should buy the DDR2-PC6400 800Mhz instead of the DDR2-PC5300 667Mhz when both of them are compatible with your system. Note: For systems that supports dual channel memory mode, although memory modules need to be installed in pairs to enable Dual Channel Memory Mode, we still recommended users to purchase one bigger module than two smaller modules since Dual Channel Memory Mode has only a minimal improvement on the actual system performance.
Mix and match is ok with computers in now days. Different sizes/speeds of memory can be used together as long as their specification are qualified by the systems. For instance, a laptop can use one 512MB and one 2GB of memory for the total of 2.5GB system memory. Mixing two different speeds of memory modules would result the system to run at the speed of the slower memory between the two modules. We recommend users to use our Memory Finder or Memory Scanner to find the correct memory for your system.
Find out what type of users you are first. Light User: The system is mainly used for checking e-mails, processing word/excel file, and web surfing with Windows XP or older operating systems. Suggestion: 1GB or above for system memory. Standard User: The system is mainly used for playing computer games, editing photos/videos, running database queries, or multi-tasking environment with Windows Vista, Windows 7, or Mac OS X . (Surfing web/Processing Word/Excel File/Listening to Music). Suggestion: 2GB or above for system memory. Power User: The system is mainly used for running large number of database queries, professional editing of photos/videos, heavy multi-tasking environment. Usually a server or a workstation would be considered as Power User due to the multiple accesses from users. Suggestion: 4GB or above for system memory.
"Excellent and honest company. I even had to deal with their customer support since UPS did not deliver to the right office, and they were quick to overnight new memory (at their cost) when the package did not turn up. I will certainly be back, and recommend others to do so."
Reviewed By Charles
"Easy to order memory. It arrived quickly & was brand that I ordered. Installed it & it worked great. Would definitely order memory from them again - great price & service."
Reviewed By Dennis
"The memory I ordered worked perfectly, and Black Diamond had the best price I found--very happy customer."
Reviewed By Steve N
"Fasta service and excellent product, my computer works faster now. I will use this products in further upgrades."
Reviewed By Jackie O
"Good product, fast shipping. Will recommend anyone."
Reviewed By Robert K
"Reliable/Trustworthy company, I am very happy with the ram I have bought and will be buying more ."
Reviewed By Tom M
"I have bought several products from this company and all have shipped quickly and worked great. Awesome customer service also. Thanks!"
Reviewed By Evan O
"I placed an order for memory for a Dell Computer on Friday and received it Monday noon.The timely delivery was very pleasing considering it shipped from California to Ohio."
Reviewed By Mike P
"I've ordered twice from them, I encountered great service and quick shipping both times. They handled an issue that came up flawlessly, and therefore I must recommend them."
Reviewed By Dob B
"I purchased the Diamond 1GB 2-SoDIMM DDR for my Inspiron 8500. Shipping was fast, memory is better than what came with my Dell (CL2 vs CL2.5). You can't beat the price/quality. Highly recommend!"
Reviewed By Red D
Sit back and let me tell you a tail, a tail of a guy that was angry with his slow laptop! It was just after my birthday, 2017. I remember it like it was yesterday. President Trump was moping the floor with the progressive socialists even this far before the Nov. 3rd election. I opened my laptop screen and pressed the power button, it took 3 min to load windows 7 pro ( upgraded from windows 10 home ) on my Dell Inspiron 5767. After some very vulgar, pre obama, sailor talk, I made the decision, RIGHT THEN AND THERE, NO MORE SPINNERS FOR ME! I logged on to a couple of forums, asked some of my system admin friends what enterprise Solid State drives they used. 7 out of 9 said, without a doubt Black Diamond. Best value, best performance, easy set up, great safety and security. 22 March 2017, I ordered my first 512Gb SSD from black diamond memory, well it was OK Memory but still. FFW 4 days, there it was in the mail box. Like a kid with a new toy I rushed to the house. Ripped open the packaging, and there it was, my very 1st SSD. I loaded Partition Magic on my SLOW-AS-BA!!$ laptop. Dug around in my SATA adapters from broken external hard drives I was given to find an SATA USB adapter that would work with this new drive. FOUND ONE!!!. It was a toshiba 128 Gb that had been dropped. My lucky DAY!!!!. Fired up Partition Magic, opened the migrate to ssd/hdd and voila, there it was. A perfect copy of my entire system. Very exciting. Next was to set the BIOS to accept the new SSD. Not a difficult task, just took some minor tinkering. Disassembled my laptop, as I have done many, many times for cleaning and what not. Removed the old spinner and replaced it with a brand new Black Diamond SSD. While I had the case open, I cleaned the fan, cleaned the exhaust of the CPU cooler, replaced the heat sink compound on the CPU. I highly recommend Quik silver heat sink compound, makes intel processors work better. Reassembled my system, plugged everything back in booted it up into the BIOS, just to make sure this drive was showing up properly, IT WAS!!!!. 1st system boot was 3.28 seconds!!!!!!!!!!!!! I was so happy. It was kinda like having a whole brand new machine. Total time to replace the drive, including migrating the system to the new SSD and cleaning out the case, 3 Hrs 18 Min. I have been using this drive ever since. Every day I do something on my laptop. I have been very pleased with the performance of this drive. I had some reservations about downgrading to winblows 10 because of the stupid " end of life " crap from macroslut. I gave in and did the downgrade 3 years ago. Everything is great. This old system just keep chugging along. Very impressed with how fast I can render videos from my gopro and motorola phones. So impressed, I just purchased a 1Tb Black Diamond SSD, to replace the 512 Gb that is now over 5 years old, Still Kicking a$$ to BTW
Reviewed By I wanted a faster laptop